JP5866498B2 - Display control device, projection device, display control program, and recording medium - Google Patents

Description

The present invention relates to a display control device, a projection device, a display control program, and a recording medium that control display of information provided to a passenger such as a vehicle.

  In recent years, a driving support system that acquires speed limit information of a road on which a vehicle is traveling using an image such as a road sign acquired by an in-vehicle camera and prevents the overspeed by transmitting the acquired speed limit information to an occupant Development is underway. Such a driving support system is disclosed, for example, in Patent Document 1 (hereinafter referred to as a conventional technique).

  In the conventional technology, a speed limit of a lane in which the vehicle is traveling (hereinafter referred to as a travel lane) is specified, and an image indicating the specified speed limit is superimposed on a map image and displayed on a display medium. Further, the conventional technology specifies the speed limit of the adjacent lane (the lane adjacent to the travel lane), and displays an image indicating the specified speed limit of the adjacent lane on the display medium superimposed on the map image. Thereby, the driver | operator of a vehicle can know the speed limit of each lane.

JP 2009-187166 A

  However, in the prior art, there is a problem in the visibility of the speed limit information regarding the switching of the image indicating the speed limit on the display medium.

An object of the present invention is to provide a display control device, a display control method, a projection device, a display control program, and a recording medium that can improve the visibility of a speed limit displayed on a display medium.

A display control apparatus according to an aspect of the present invention includes an input unit that receives speed limit information that is information about a speed limit of a road on which a vehicle travels, and generates a predetermined image based on the speed limit information and outputs the generated image to a display medium. And a control unit that controls the display unit, wherein the predetermined image represents a presentation image indicating a speed limit when displayed on the display medium, and the control unit includes a first speed indicating a first speed limit. to produce a first predetermined image representing a presentation image prior Symbol display unit detects a change in the vehicle speed limit of the road running, to the first speed limit or we second speed limit When the detected change is a decreasing pattern , the display unit is used to stop the display of the first presentation image on the display medium , and after the first time has elapsed, the second restriction to display the second presentation image showing the velocity, whereas, an increase Pas When down, after the display of the previous SL first presentation image is stopped, after a lapse of a second time it is less than or more and the first time zero, causing displaying the second presentation image.

A projection apparatus according to an aspect of the present invention generates an image on a display medium by generating a predetermined image based on the speed limit information, an input unit that receives speed limit information that is information on a speed limit of a road on which the vehicle travels. A display unit; and a control unit that controls the display unit, wherein the predetermined image represents a presentation image indicating a speed limit when displayed on the display medium, and the control unit includes a first limit to produce a first predetermined image representing the first presentation image showing the velocity before Symbol display unit, the vehicle is the speed limit of the road running, to the first speed limit or we second speed limit When a change is detected, and when the detected change is a decrease pattern, the display unit is used to stop the display of the first presentation image on the display medium , and after the elapse of a first time, to display the second presentation image showing a second speed limit, single When the increase pattern, after stopping the display of the first presentation image, after the second time period has elapsed it is less than or more and said first time-zero, causes the display of the second presentation image.

A display control program according to an aspect of the present invention represents an acquisition unit that acquires speed limit information that is information about a speed limit of a road on which a vehicle travels, and a presentation image that indicates the speed limit when displayed on a display medium. , a display control program to be Oite performed to the display control equipment in the display system comprising a display unit for outputting to the display medium to generate a predetermined image based on the speed limit information, the display control unit The first predetermined image representing the first presentation image indicating the first speed limit to the computer and the first speed of the road on which the vehicle travels is generated. from speed limit, the first speed limit and a process of detecting a change to a different second speed limit, when the sensed change in the decreasing pattern, using the display unit, the in the display medium After stopping the display of one of the presented image, after a first time, the display the second second presentation image indicating the speed limit, whereas, when the increase pattern, before Symbol first presentation After the display of the image is stopped , the second presentation image is displayed after a second time that is zero or more and less than the first time .

A recording medium according to an aspect of the present invention represents an acquisition unit that acquires speed limit information that is information on a speed limit of a road on which a vehicle travels, and a presentation image that indicates the speed limit when displayed on a display medium, the speed limit information predetermined image generated the display medium display control equipment display control program recorded with a computer-readable non-transitory a being Oite performed in the display system including a display unit, the output to be a based on the A process for causing the display unit to generate a first predetermined image representing a first presentation image indicating a first speed limit with respect to a computer of the display control device, of but speed limit of the road running from the first speed limit, the process of detecting a change to the first speed limit and a different second speed limit, when the sensed change in the decreasing pattern, Using the serial display unit, after stopping the display of the first presentation image in the display medium, after the lapse of the first time, to display the second presentation image indicating the second speed limit, on the other hand, when the increase pattern, after the display of the previous SL first presentation image is stopped, after a lapse of a second time it is less than or more and the first time zero, thereby displaying the second presentation image processing And recorded a display control program to execute.

  According to the present invention, the visibility of the speed limit displayed on the display medium can be improved.

The block diagram which shows the structural example of the display system which concerns on Embodiment 1 of this invention. The flowchart which shows the operation example of the display system which concerns on Embodiment 1 of this invention. The flowchart which shows the operation example of the display system which concerns on Embodiment 1 of this invention. The figure explaining the specific example 1 of the switching of the image display which concerns on Embodiment 1 of this invention The figure explaining the specific example 2 of the switching of the image display which concerns on Embodiment 1 of this invention The figure explaining the example 3 of the switching of the image display which concerns on Embodiment 1 of this invention The figure explaining the example 4 of the switching of the image display which concerns on Embodiment 1 of this invention The figure explaining the example 5 of switching of the image display which concerns on Embodiment 1 of this invention. The figure explaining the specific example 6 of the switching of the image display which concerns on Embodiment 1 of this invention. The figure which shows the example of a display of the image which concerns on Embodiment 1 of this invention. The block diagram which shows the other structural example of the display system which concerns on Embodiment 1 of this invention. The flowchart which shows the other operation example of the display system which concerns on Embodiment 1 of this invention. The block diagram which shows the structural example of the display system which concerns on Embodiment 2 of this invention. The block diagram which shows the hardware structural example of the display system which concerns on Embodiment 1, 2 of this invention, and a display control apparatus.

  In the conventional driving support system, when the speed limit of the road on which the vehicle is traveling is switched, the speed limit information presented to the occupant on the display medium is uniformly changed. For this reason, there is a visibility problem that the occupant does not notice the change in the speed limit information when necessary, or feels the visual annoyance due to the change in the speed limit information when not particularly necessary. . Therefore, Embodiments 1 and 2 of the present invention described below are intended to solve such problems and improve the visibility of the speed limit displayed on the display medium.

(Embodiment 1)
Embodiment 1 of the present invention will be described with reference to the drawings.

  First, a configuration example of the display system 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram illustrating a configuration example of a display system 1 according to the present embodiment.

  The display system 1 is a system that is used in a moving body such as a vehicle and supports driving of the vehicle. The display system 1 may be an in-vehicle device or a device brought into a vehicle. In this embodiment, an example in which the user is a vehicle occupant, particularly a vehicle driver, is described, but the present invention is not limited thereto. Furthermore, the display system 1 may be used in a wearable computer (for example, an HMD described later) that can be worn by the user.

  In FIG. 1, the display system 1 includes an acquisition unit 10, a display control device 20, and a display unit 30. In addition, the display control device 20 includes a control unit 201 and a determination unit 202.

  The acquisition unit 10 acquires information on the speed limit of the road on which the vehicle travels. Specifically, the acquisition unit 10 acquires speed limit information at a predetermined timing. The speed limit information is information indicating a road speed limit (for example, 30 km / h, 50 km / h, etc.). The road here includes a road in a predetermined section, a lane (vehicle lane), or a road in an area where a speed limit is determined in advance.

  In the present embodiment, as an example, it is assumed that the speed limit information is associated in advance for each road section included in the map information and stored in a predetermined storage device together with the map information. The predetermined storage device may be provided in the display system 1 or may be provided outside the display system 1. And the acquisition part 10 acquires speed limit information from a predetermined memory | storage device, for example, whenever the road area which a vehicle drive | works switches.

  The display unit 30 generates a predetermined image based on the information acquired by the acquisition unit 10 and displays the predetermined image on a display medium (not shown). Specifically, the display unit 30 generates an image based on the control information of the control unit 201, and projects the generated image on a display medium.

  The predetermined image may be an image or image data. When the display unit 30 has a projector function, the predetermined image is an image, and the display unit 30 projects the predetermined image onto a display medium. On the other hand, when the display unit 30 does not have a projector function, the display unit 30 generates image data and outputs the image data to the display medium.

  When the display unit 30 has a projector function, the display medium is, for example, a head up display (HUD). In such a case, the display unit 30 projects a predetermined image on the display medium and causes the vehicle occupant to recognize it as a virtual image. In the present disclosure, the following description will be given on the assumption that projecting a predetermined image onto a display medium and causing the occupant to recognize it as a virtual image is synonymous with displaying the predetermined image on the display medium. That is, in the following description, an event in which a predetermined image is projected onto the HUD and visually recognized as a virtual image by the occupant is described as display.

  The display unit 30 has, for example, a projector function, and directly projects the generated image onto a HUD that is a display medium. Thereby, the image is displayed on the HUD. Instead of using the projector function, the display unit 30 may display a virtual image on the HUD using, for example, a hologram principle. In the case of using a hologram, a system using a light guide plate that guides a parallel light beam group that satisfies the total internal reflection condition of the light guide plate by total internal reflection may be used. In the method using the light guide plate, the image data is not directly projected as in the projector, but for the sake of convenience of explanation, it will be described using the definition of projection or display as in the projector method.

  Note that the display medium is not limited to the HUD. Examples of display media include LCD (Liquid Crystal Display), HUD, HMD (Head-Mounted Display or Helmet-Mounted Display), glasses-type display (Smart Glasses), navigation display, meter display, and other dedicated displays. Applied. The HUD may be, for example, a windshield of a vehicle, or may be a separately provided glass surface, plastic surface, or the like. The windshield may be, for example, a windshield, a vehicle side glass or a back glass. In either case, the image is displayed on the display medium.

  When the display unit 30 does not have a projector function, the display medium is, for example, a transmissive display, and the predetermined image generated by the display unit 30 is image data. That is, the display unit 30 displays the presentation image (viewed image) on the transmissive display by outputting the image data to the transmissive display.

  The transmissive display is, for example, a transmissive organic EL display or a transparent display using glass that emits light when irradiated with light of a specific wavelength. You can see the display above. The transmissive display is a display medium that transmits light. Since the principle that the image data input to the transmissive display is displayed as a presentation image is a known technique, description thereof is omitted.

  In the present embodiment, the output is defined as a superordinate concept of projection.

  When the acquisition unit 10 acquires the first speed limit information indicating the first speed limit, the control unit 201 displays a first predetermined image representing an image indicating the first speed limit when displayed on the display medium. Is generated and displayed on the display medium.

  Here, the image indicating the speed limit may be an image including only speed limit numeric information, or may be an image including speed limit numeric information such as a sign. The image indicating the speed limit is an image displayed on the display medium. The predetermined image is an image generated in the display unit. That is, the image indicating the speed limit displayed on the display medium and the predetermined image have substantially the same contents.

  When the acquisition unit 10 acquires the first speed limit information and then acquires the second speed limit information indicating the second speed limit different from the first speed limit, the determination unit 202 receives the first speed limit information. The magnitude relationship between the speed and the second speed limit is determined.

  When the determination unit 202 determines that the first speed limit is greater than the second speed limit, the control unit 201 causes the display unit 30 to generate the first predetermined image and display it on the display medium. A first switching method in which switching to control in which a second predetermined image representing an image indicating the second speed limit when displayed on the display medium is generated on the display unit 30 and displayed on the display medium is predetermined. To execute.

  On the other hand, when the determination unit 202 determines that the first speed limit is lower than the second speed limit, the control unit 201 causes the display unit 30 to generate the first predetermined image and display it on the display medium. Switching from the control to the control for generating the second predetermined image on the display unit 30 and displaying it on the display medium is executed by a second switching method different from the first switching method.

  The control unit 201 controls the display unit 30 by outputting to the display unit 30 control information indicating the above-described control switching instruction and the content of the switched control.

  The display system 1 may be configured to include the display medium described above. Further, the display control device 20 may include the display unit 30 to be configured as a projection device.

  The predetermined image is an image whose design is determined in advance. For example, the predetermined image may be a road sign indicating a speed limit, or an image expressing speed limit information as a digital display using a 7-segment display or the like. There may be.

  Further, the first image or the second image described above may be generated not by the display unit 30 but by the display control device 20 or other components not shown.

  The first image or the second image generated in the display system 1 is visually recognized by the driver as a virtual image, for example. At this time, the first image or the second image may be projected onto the display medium so as to be superimposed on the driver's field of view. In addition, since the principle by which a driver | operator visually recognizes the image projected on the display medium as a virtual image is a well-known technique, description is abbreviate | omitted.

  The configuration example of the display system 1 according to the present embodiment has been described above.

  Next, an operation example of the display system 1 according to the present embodiment will be described with reference to FIG. FIG. 2 is a flowchart showing an operation example of the display system 1 according to the present embodiment. The flow in FIG. 2 is performed when the road section on which the vehicle travels is switched. For example, the flow in FIG. 2 is a processing flow of the display system when a vehicle enters from another road section to another road section. Here, the road section may distinguish, for example, a straight road, an intersection where the vehicle turns right and left on the straight road, and a straight road traveling after the vehicle turns right and left. The road section may be a road link, for example. The road link may be managed by an ID for each road. In the following description, the road section will be described using a road link as an example.

  First, the acquisition unit 10 acquires speed limit information on a road after switching, for example, in response to switching of a road link on which the vehicle travels (step S001). Here, as an example, it is assumed that the speed limit of the second road section in which the vehicle is currently traveling is the second speed limit. The acquisition unit 10 acquires second speed limit information indicating the second speed limit. The acquisition unit 10 acquires first speed limit information indicating the first speed limit before acquiring the second speed limit information. The first speed limit is the speed limit of the first road section that the vehicle has traveled until immediately before traveling on the second road section. The first speed limit is different from the second speed limit. Then, at least before acquiring the second speed limit information, the control unit 201 displays an image indicating the first speed limit when displayed on the display medium based on the first speed limit information. The display unit 30 is controlled so as to generate one predetermined image. Then, the display unit 30 displays the first predetermined image on the display medium under the control of the control unit 201.

  When the vehicle is traveling on the first road link, an image indicating the first speed limit is displayed on the display medium, and when the vehicle starts to travel on the second road link, the first speed limit is May not be displayed on the display medium. That is, the first timing at which the road on which the vehicle travels from the first road link to the second road link is matched with the second timing at which the image indicating the first speed limit is not displayed on the display medium. However, it is not always necessary that the two match due to a delay in processing time of the apparatus. The second timing may be earlier or later than the first timing, and does not limit the scope of the present disclosure.

  Next, the determination unit 202 compares the first speed limit indicated by the first speed limit information acquired last time with the second speed limit indicated by the second speed limit information acquired this time, and The speed increase / decrease pattern is determined (step S002). The determination of the increase / decrease pattern means determination of the magnitude relationship.

  In the above description, the case where the acquisition unit 10 acquires the second speed limit information indicating the second speed limit different from the first speed limit after acquiring the first speed limit information has been described. However, even if the road section is switched, the speed limit information acquired by the acquisition unit 10 may not change. In such a case, the acquisition unit 10 may output speed limit information to the determination unit 202, and the determination unit 202 may determine whether or not the speed limit has changed (see step S011 in FIG. 3). Alternatively, the acquisition unit 10 may output information to the control unit 201 without outputting information to the determination unit 202 because the speed limit information does not change. The processing in the case where the speed limit does not change even when the road section is switched may be realized by other methods, and does not limit the scope of the present disclosure.

  As a result of the determination of the increase / decrease pattern, when the first speed limit is larger than the second speed limit, the determination unit 202 determines that the pattern is a decrease pattern (step S003: YES). In this case, the flow proceeds to step S004. When the decrease pattern is determined, in step S004, which will be described later, control is performed so that the driver can easily recognize the change in the speed limit information. This is because the driver may exceed the speed limit when the decrease pattern is determined, and in this case, the vehicle needs to be decelerated.

  On the other hand, as a result of the determination of the increase / decrease pattern, if the first speed limit is smaller than the second speed limit, the determination unit 202 determines that the pattern is an increase pattern (step S003: NO). In this case, the flow proceeds to step S005. When the increase pattern is determined, in step S005 described later, control is performed so as not to give the driver visual inconvenience due to switching of the speed limit information. This is because when the increase pattern is determined, the driver may drive at an optimum speed so as not to disturb the traffic flow of other vehicles in consideration of the speed limit.

  Next, when it is determined by the determination unit 202 that the decrease pattern is the decrease pattern, the control unit 201 uses the first switching method determined in advance to control the display unit 30 to generate the first image, and then perform the second operation. Control is switched to causing the display unit 30 to generate a second image representing the speed limit (step S004). An example of control switching by the first switching method will be described later with reference to FIGS.

  On the other hand, if the determination unit 202 determines that the increase pattern is present, the control unit 201 uses the second switching method determined in advance to control the display unit 30 to generate the first image. The control is switched to generating the image on the display unit 30 (step S005). The first switching method and the second switching method are different. Note that an example of control switching by the second switching method will be described later with reference to FIGS.

  In steps S <b> 004 and S <b> 005, the control unit 201 outputs to the display unit 30 control information indicating a control switching instruction and the content of the switched control.

  Next, the display unit 30 generates an image based on the control information from the control unit 201, and projects the image onto the display medium (step S006).

  The operation example of the display system 1 according to the present embodiment has been described above.

  Next, a specific example of the control (image displayed on the display medium) by the first switching method and the second switching method described in steps S004 and S005 in FIG. 2 will be described with reference to FIGS. Will be described below.

  4 to 9, the vertical axis indicates the luminance (relative value based on an arbitrary value) of the image displayed on the display medium, and the horizontal axis indicates an image indicating the speed limit on the display medium. Show time. The time T1 indicates the time for which the first images 101 and 103 indicating the first speed limit are displayed on the display medium. The time T2 indicates a time during which the second images 102 and 104 indicating the second speed limit are displayed on the display medium. The time point P indicates a time point when the first images 101 and 103 are not displayed on the display medium. The first images 101 and 103 and the second images 102 and 104 are visually recognized by the occupant as virtual images when the display medium is a HUD.

  In FIGS. 4 to 9, the first images 101 and 103 and the second images 102 and 104 are, for example, road sign type images in which the speed limit is shown at the center. The first image 101 is an image indicating that the speed limit (first speed limit) is 60 km / h, for example. The second image 102 is an image indicating that the speed limit (second speed limit) is 50 km / h, for example. The first image 103 is an image indicating that the speed limit (first speed limit) is 50 km / h, for example. The second image 104 is an image indicating that the speed limit (second speed limit) is 60 km / h, for example. The first speed limit corresponds to the speed limit of the first road section, and the second speed limit corresponds to the speed limit of the second road section.

<Specific example 1>
Specific example 1 will be described with reference to FIG. FIG. 4A is a diagram for explaining a specific example of control switching by the first switching method. FIG. 4B is a diagram illustrating a specific example of control switching by the second switching method.

  First, a specific example of control switching by the first switching method will be described with reference to FIG. 4A. FIG. 4A is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is greater than the second speed limit.

  During the time T1, the control unit 201 generates a predetermined image representing the first image 101 when displayed on the display medium, and controls the display unit 30 to display the predetermined image on the display medium with a predetermined luminance. As a result, the first image 101 is displayed on the display medium.

  After that, when the determination unit 202 determines that the reduction pattern is in response to the vehicle entering the second road link having a speed limit of 50 km / h, the control unit 201 first By stopping the generation of the predetermined image representing the image 101, the display unit 30 is controlled to stop the display on the display medium. As a result, the first image 101 is not displayed on the display medium at the time point P.

  The control unit 201 generates a predetermined image representing the second image 102 when displayed on the display medium after a predetermined time T3 (for example, 0.5 seconds or 1 second). The display unit 30 is controlled to display on the display medium with a predetermined luminance (for example, the same luminance as the first image 101). As a result, the second image 102 is displayed on the display medium. Note that the control unit 201 may control the display unit 30 so that a predetermined image representing the second image 102 generated in advance is read from a predetermined storage device and displayed with a predetermined luminance.

  Thus, in the case of the decrease pattern, the control unit 201 displays the second image 102 on the display medium so that the second image 102 is displayed after a predetermined time T3 has elapsed since the display of the first image 101 disappeared. The display unit 30 is controlled. For this reason, the switching of the image becomes more remarkable, and the driver can easily recognize the switching of the image. For example, even when the driver is not gazing at the display medium, the driver can feel the switching of images.

  Next, a specific example of control switching by the second switching method will be described with reference to FIG. 4B. FIG. 4B is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is smaller than the second speed limit.

  During time T1, the control unit 201 generates a predetermined image representing the first image 103 when displayed on the display medium, and controls the display unit 30 to display the predetermined image on the display medium with a predetermined luminance. As a result, the first image 103 is displayed on the display medium.

  After that, if the determination unit 202 determines that the increase pattern is in response to the vehicle entering the second road link having a speed limit of 60 km / h, the control unit 201 first By stopping the generation of the predetermined image representing the image 103, the display unit 30 is controlled to stop the display on the display medium. As a result, the first image 103 is not displayed on the display medium at the time point P.

  Then, the control unit 201 generates a predetermined image representing the second image 104 when displayed on the display medium after the elapse of a predetermined time T4 (for example, zero or more and less than the time T3). The display unit 30 is controlled so as to display on the display medium with the brightness of. As a result, the second image 104 is displayed on the display medium.

  Generally, it is said that a critical fusion frequency (CFF: Critical Flicker Frequency), which is a light and dark limit frequency perceivable by humans, is 30 to 40 Hz. The time T4 may be set to a value of, for example, 20 msec or less based on this CFF. Alternatively, as shown in FIG. 4C, the display may be immediately switched from the first image 103 to the second image 104 by setting the time T4 to zero. By doing in this way, it becomes difficult for the driver to feel the visual troublesomeness caused by the switching of images. That is, time T4 is zero or more and less than time T3.

  In the above description, when the speed limit does not change even when the road section is switched, the control unit 201 does not switch control like the increase / decrease pattern. However, when the time T4 is zero as shown in FIG. 4C, the case where the speed limit does not change may be processed as the same case as the increase pattern. The processing method in the case where the speed limit does not change even when the road section is switched may be realized by other methods, and does not limit the scope of the present disclosure.

  As described above, in the case of the increase pattern, the display of the second image 104 is performed after a certain time T4 has elapsed since the display of the first image 103 disappeared. For this reason, the switching of the image is not significant as compared with the case of the decrease pattern, and the driver is less likely to feel the visual troublesomeness due to the switching of the image.

  It is desirable that the time point P coincides with the time point when the vehicle enters the second road section from the first road section. This is because the driver can be notified of information on the speed limit information in real time. However, in the present disclosure, the time when the vehicle enters the second road section from the first road section does not necessarily need to coincide with the time P, and it is allowed to be shifted by an arbitrary time. It does not limit the range. This is the same in the specific examples illustrated below.

<Specific example 2>
Specific example 2 will be described with reference to FIG. FIG. 5A is a diagram for explaining a specific example of control switching by the first switching method. FIG. 5B is a diagram for explaining a specific example of control switching by the second switching method.

  First, a specific example of control switching by the first switching method will be described with reference to FIG. 5A. FIG. 5A is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is greater than the second speed limit.

  During time T1, the control unit 201 controls the display unit 30 to generate a predetermined image representing the first image 101 when displayed on the display medium and display the predetermined image on the display medium with the first luminance B1. To do. As a result, the first image 101 is displayed on the display medium.

  After that, when the determination unit 202 determines that the reduction pattern is in response to the vehicle entering the second road link having a speed limit of 50 km / h, the control unit 201 first By stopping the generation of the predetermined image representing the image 101, the display unit 30 is controlled to stop the display on the display medium. As a result, the first image 101 is not displayed on the display medium at the time point P.

  In addition, the control unit 201 generates a predetermined image representing the second image 102 when displayed on the display medium, and the second luminance B2 whose absolute value of the difference from the first luminance B1 is M1. The display unit 30 is controlled to display on the display medium. As a result, the second image 102 is displayed on the display medium. In FIG. 5A, as an example, the second luminance B2 is set to a value larger than the first luminance B1. The absolute value M1 is larger than the absolute value M2 in the case of an increase pattern described later.

  Then, after displaying the second image 102, the control unit 201 controls the display unit 30 to gradually return the second luminance B2 to the first luminance B1 at a predetermined timing.

  Next, a specific example of control switching by the second switching method will be described with reference to FIG. 5B. FIG. 5B is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is smaller than the second speed limit.

  During time T1, the control unit 201 controls the display unit 30 to generate a predetermined image representing the first image 103 when displayed on the display medium and display the predetermined image on the display medium with the first luminance B1. To do. As a result, the first image 103 is displayed on the display medium.

  After that, if the determination unit 202 determines that the increase pattern is in response to the vehicle entering the second road link having a speed limit of 60 km / h, the control unit 201 first By stopping the generation of the predetermined image representing the image 103, the display unit 30 is controlled to stop the display on the display medium. As a result, the first image 103 is not displayed on the display medium at the time point P.

  In addition, the control unit 201 generates a predetermined image representing the second image 104 when displayed on the display medium, and uses the third luminance B3 whose absolute value of the difference from the first luminance B1 is M2. The display unit 30 is controlled to display on the display medium. As a result, the second image 104 is displayed on the display medium. In FIG. 5B, as an example, the third luminance B3 is larger than the first luminance B1 and smaller than the second luminance B2. Moreover, the absolute value M2 is a value smaller than the absolute value M1 in the case of the reduction pattern mentioned above.

  Then, after displaying the second image 104, the control unit 201 controls the display unit 30 to gradually return the third luminance B3 to the first luminance B1 at a predetermined timing.

  As described above, in the case of the decrease pattern, when the display medium is switched from the first image 101 to the second image 102, the width of the luminance change is larger than that in the case of the increase pattern. For this reason, the switching of the image becomes more remarkable, and the driver can easily recognize the switching of the image. For example, even when the driver is not gazing at the display medium, the driver can feel the switching of images. On the other hand, in the case of the increase pattern, when the display medium is switched from the first image 103 to the second image 104, the width of the change in luminance is smaller than that in the case of the decrease pattern. For this reason, the switching of the image is not significant as compared with the case of the decrease pattern, and the driver is less likely to feel the visual troublesomeness due to the switching of the image.

  In the above description, the case where both the second luminance B2 and the third luminance B3 are larger than the first luminance B1 has been described as an example. However, the present invention is not limited to this. That is, in this specific example, as long as the condition that the absolute value M2 is smaller than the absolute value M1 is satisfied, the second luminance B2 or the third luminance B3 may be the same as the first luminance B1, It may be less than one luminance B1.

<Specific example 3>
Specific example 3 will be described with reference to FIG. FIG. 6A is a diagram for explaining a specific example of control switching by the first switching method. FIG. 6B is a diagram illustrating a specific example of control switching by the second switching method.

  First, a specific example of control switching by the first switching method will be described with reference to FIG. 6A. FIG. 6A is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is greater than the second speed limit.

  During time T1, the control unit 201 controls the display unit 30 to generate a predetermined image representing the first image 101 when displayed on the display medium and display the predetermined image on the display medium with the first luminance B1. To do. As a result, the first image 101 is displayed on the display medium.

  After that, when the determination unit 202 determines that the reduction pattern is in response to the vehicle entering the second road link having a speed limit of 50 km / h, the control unit 201 first By stopping the generation of the predetermined image representing the image 101, the display unit 30 is controlled to stop the display on the display medium. As a result, the first image 101 is not displayed on the display medium at the time point P.

  Further, the control unit 201 generates a predetermined image representing the second image 102 when displayed on the display medium, and gradually increases from the first luminance B1 to the second luminance B2 at a predetermined time T5. The display unit 30 is controlled so that the luminance is increased and displayed on the display medium. As a result, the second image 102 is displayed on the display medium. In FIG. 6A, as an example, the second luminance B2 is a value larger than the first luminance B1, but may be a value smaller than the first luminance B1. The time T5 is a value smaller than the time T6 in the case of an increase pattern described later.

  Then, after displaying the second image 102, the control unit 201 controls the display unit 30 to gradually return the second luminance B2 to the first luminance B1 at a predetermined timing.

  Next, a specific example of control switching by the second switching method will be described with reference to FIG. 6B. FIG. 6B is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is smaller than the second speed limit.

  During time T1, the control unit 201 controls the display unit 30 to generate a predetermined image representing the first image 103 when displayed on the display medium and display the predetermined image on the display medium with the first luminance B1. To do. As a result, the first image 103 is displayed on the display medium.

  After that, if the determination unit 202 determines that the increase pattern is in response to the vehicle entering the second road link having a speed limit of 60 km / h, the control unit 201 first By stopping the generation of the predetermined image representing the image 103, the display unit 30 is controlled to stop the display on the display medium. As a result, the first image 103 is not displayed on the display medium at the time point P.

  In addition, the control unit 201 generates a predetermined image representing the second image 104 when displayed on the display medium, and gradually increases from the first luminance B1 to the second luminance B2 at a predetermined time T6. The display unit 30 is controlled so that the luminance is increased and displayed on the display medium. As a result, the second image 104 is displayed on the display medium. In FIG. 6B, as an example, the second luminance B2 is a value larger than the first luminance B1, but may be a value smaller than the first luminance B1. The time T6 is a value larger than the time T5 in the case of the above-described decrease pattern.

  Then, after displaying the second image 104, the control unit 201 controls the display unit 30 to gradually return the second luminance B2 to the first luminance B1 at a predetermined timing.

  As described above, in the case of the decrease pattern, when the display medium is switched from the first image 101 to the second image 102, the change in luminance is steep compared to the case of the increase pattern. For this reason, the switching of the image becomes more remarkable, and the driver can easily recognize the switching of the image. For example, even when the driver is not gazing at the display medium, the driver can feel the switching of images. On the other hand, in the case of the increase pattern, the change in luminance is slower in the display medium when switching from the first image 103 to the second image 104 than in the case of the decrease pattern. For this reason, the switching of the image is not significant as compared with the case of the decrease pattern, and the driver is less likely to feel the visual troublesomeness due to the switching of the image.

<Specific Example 4>
Specific example 4 will be described with reference to FIG. FIG. 7A is a diagram for explaining a specific example of control switching by the first switching method. FIG. 7B is a diagram for describing a specific example of control switching by the second switching method.

  First, a specific example of control switching by the first switching method will be described with reference to FIG. 7A. FIG. 7A is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is greater than the second speed limit.

  During the time T1, the control unit 201 generates a predetermined image representing the first image 101 when displayed on the display medium, and controls the display unit 30 to display the predetermined image on the display medium with a predetermined luminance. As a result, the first image 101 is displayed on the display medium.

  After that, when the determination unit 202 determines that the reduction pattern is in response to the vehicle entering the second road link having a speed limit of 50 km / h, the control unit 201 first By stopping the generation of the predetermined image representing the image 101, the display unit 30 is controlled to stop the display on the display medium. As a result, the first image 101 is not displayed on the display medium at the time point P.

  In addition, the control unit 201 generates a predetermined image representing the second image 102 when displayed on the display medium, and gradually increases the luminance at a predetermined time T7 and displays it on the display medium. The display unit 30 is controlled. As a result, the second image 102 is displayed on the display medium. In FIG. 7A, as an example, the luminance of the second image 102 is increased to the same luminance as that of the first image 101, but may be increased to a predetermined luminance that is higher than the luminance of the first image 101. The time T7 is a value smaller than the time T8 in the case of an increase pattern, which will be described later, but is larger than the value 20 msec set based on the CFF described above, for example. That is, 20 msec <T7 <T8.

  Next, a specific example of control switching by the second switching method will be described with reference to FIG. 7B. FIG. 7B is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is smaller than the second speed limit.

  During time T1, the control unit 201 generates a predetermined image representing the first image 103 when displayed on the display medium, and controls the display unit 30 to display the predetermined image on the display medium with a predetermined luminance. As a result, the first image 103 is displayed on the display medium.

  After that, if the determination unit 202 determines that the increase pattern is in response to the vehicle entering the second road link having a speed limit of 60 km / h, the control unit 201 first By stopping the generation of the predetermined image representing the image 103, the display unit 30 is controlled to stop the display on the display medium. As a result, the first image 103 is not displayed on the display medium at the time point P.

  Further, the control unit 201 generates a predetermined image representing the second image 104 when displayed on the display medium, and gradually increases the luminance at a predetermined time T8 and displays the predetermined image on the display medium. The display unit 30 is controlled. As a result, the second image 104 is displayed on the display medium. In FIG. 7B, as an example, the luminance of the second image 104 is increased to the same luminance as that of the first image 103, but may be increased to a predetermined luminance that is higher than the luminance of the first image 103. Further, the time T8 is a value larger than the time T7 in the case of the above-described decrease pattern.

  As described above, in the case of the decrease pattern, when the display medium is switched from the first image 101 to the second image 102, the change in luminance is steep compared to the case of the increase pattern. For this reason, the switching of the image becomes more remarkable, and the driver can easily recognize the switching of the image. For example, even when the driver is not gazing at the display medium, the driver can feel the switching of images. On the other hand, in the case of the increase pattern, the change in luminance is slower in the display medium when switching from the first image 103 to the second image 104 than in the case of the decrease pattern. For this reason, the switching of the image is not significant as compared with the case of the decrease pattern, and the driver is less likely to feel the visual troublesomeness due to the switching of the image.

<Specific Example 5>
Specific example 5 will be described with reference to FIG. FIG. 8A is a diagram for explaining a specific example of control switching by the first switching method. FIG. 8B is a diagram illustrating a specific example of control switching by the second switching method.

  In this specific example, the acquisition unit 10 acquires the second speed limit information associated with the second road link at the predetermined timing at time T1, and the determination unit 202 determines the increase / decrease pattern. This will be described in detail. The predetermined timing is, for example, a few seconds before the time when the vehicle enters the second road link or a few tens of seconds before. As a second speed limit information acquisition method, the vehicle is connected to the first road link by referring to a map information database or the like storing road link connection information while traveling on the first road link. The second road link and speed limit information are acquired in advance. In addition, when a plurality of road links are connected to the first link, information on the second road link may be acquired by acquiring the road link on which the host vehicle is scheduled to travel from the navigation information.

  First, a specific example of control switching by the first switching method will be described with reference to FIG. 8A. FIG. 8A is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is greater than the second speed limit.

  During time T1, before the time T7, the control unit 201 generates a predetermined image representing the first image 101 when displayed on the display medium, and displays the predetermined image on the display medium with a predetermined luminance. The unit 30 is controlled. As a result, the first image 101 is displayed on the display medium.

  Thereafter, when the determination unit 202 determines that the decrease pattern is present at a predetermined timing before the time point P, the control unit 201 gradually decreases the luminance at a predetermined time T7 to display the first image 101. The display unit 30 is controlled to stop the display on the display medium at the time point P by stopping the display of the predetermined image to be displayed. The time T7 is the value described in the specific example 4 above. Thereby, the first image 101 is not displayed on the display medium at the time point P.

  Further, in response to the vehicle entering the second road link whose speed limit is 50 km / h, the control unit 201 generates a predetermined image representing the second image 102 when displayed on the display medium. Then, the display unit 30 is controlled to display on the display medium with a predetermined luminance. As a result, the second image 102 is displayed on the display medium. In FIG. 8A, as an example, the luminance of the second image 102 is the same as that of the first image 101, but may be a predetermined luminance higher than that of the first image 101.

  Next, a specific example of control switching by the second switching method will be described with reference to FIG. 8B. FIG. 8B is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is smaller than the second speed limit.

  During time T1, before the time T8, the control unit 201 generates a predetermined image representing the first image 103 when displayed on the display medium, and displays the predetermined image on the display medium with a predetermined luminance. The unit 30 is controlled. As a result, the first image 103 is displayed on the display medium.

  Thereafter, when the determination unit 202 determines that the increase pattern is present at a predetermined timing before time P, the control unit 201 gradually decreases the luminance at a predetermined time T8 to display the first image 103. The display unit 30 is controlled to stop the display on the display medium at the time point P by stopping the display of the predetermined image to be represented. The time T8 is the value described in the specific example 4 above. As a result, the first image 103 is not displayed on the display medium at the time point P.

  Further, in response to the vehicle entering the second road link whose speed limit is 60 km / h, the control unit 201 generates a predetermined image representing the second image 104 when displayed on the display medium. Then, the display unit 30 is controlled to display on the display medium with a predetermined luminance. As a result, the second image 104 is displayed on the display medium. In FIG. 8B, as an example, the luminance of the second image 104 is the same as that of the first image 103, but may be a predetermined luminance higher than that of the first image 103.

  As described above, in the case of the decrease pattern, when the display medium is switched from the first image 101 to the second image 102, the change in luminance is steep compared to the case of the increase pattern. For this reason, the switching of the image becomes more remarkable, and the driver can easily recognize the switching of the image. For example, even when the driver is not gazing at the display medium, the driver can feel the switching of images. On the other hand, in the case of the increase pattern, the change in luminance is slower in the display medium when switching from the first image 103 to the second image 104 than in the case of the decrease pattern. For this reason, the switching of the image is not significant as compared with the case of the decrease pattern, and the driver is less likely to feel the visual troublesomeness due to the switching of the image.

<Specific Example 6>
Specific example 6 will be described with reference to FIG. This specific example is an example in which specific example 4 and specific example 5 are combined. FIG. 9A is a diagram illustrating a specific example of control switching by the first switching method. FIG. 9B is a diagram illustrating a specific example of control switching by the second switching method.

  First, a specific example of control switching by the first switching method will be described with reference to FIG. 9A. FIG. 9A is used to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is greater than the second speed limit.

  During time T1, before the time T7, the control unit 201 generates a predetermined image representing the first image 101 when displayed on the display medium, and displays the predetermined image on the display medium with a predetermined luminance. The unit 30 is controlled. As a result, the first image 101 is displayed on the display medium.

  After that, when the determination unit 202 determines that the decrease pattern is determined at a predetermined timing before the time point P, the control unit 201 gradually decreases the luminance at time T7 to display the predetermined image representing the first image 101. By stopping the display, the display unit 30 is controlled to stop the display on the display medium at the time point P. As a result, the first image 101 is not displayed on the display medium at the time point P.

  Further, in response to the vehicle entering the second road link whose speed limit is 50 km / h, the control unit 201 generates a predetermined image representing the second image 102 when displayed on the display medium. At time T7, the display unit 30 is controlled so that the luminance is gradually increased and displayed on the display medium. As a result, the second image 102 is displayed on the display medium.

  In this specific example, the time T7 is a value smaller than the time T8 in the case of an increase pattern described later, but is larger than the value 20 msec set based on the above-described CFF, for example. That is, 20 msec / 2 <T7 <T8.

  Next, a specific example of control switching by the second switching method will be described with reference to FIG. 9B. FIG. 9B serves to explain a specific example of control switching when the determination unit 202 determines that the first speed limit is smaller than the second speed limit.

  During time T1, before the time T8, the control unit 201 generates a predetermined image representing the first image 103 when displayed on the display medium, and displays the predetermined image on the display medium with a predetermined luminance. The unit 30 is controlled. As a result, the first image 103 is displayed on the display medium.

  Thereafter, when the determination unit 202 determines that the increase pattern is determined at a predetermined timing before the time point P, the control unit 201 gradually decreases the luminance at time T8 to display a predetermined image representing the first image 103. By stopping the display, the display unit 30 is controlled to stop the display on the display medium at the time point P. As a result, the first image 103 is not displayed on the display medium at the time point P.

  Further, in response to the vehicle entering the second road link whose speed limit is 60 km / h, the control unit 201 generates a predetermined image representing the second image 104 when displayed on the display medium. Thus, the display unit 30 is controlled so that the luminance is gradually increased and displayed on the display medium at time T8. As a result, the second image 104 is displayed on the display medium.

  As described above, in the case of the decrease pattern, when the display medium is switched from the first image 101 to the second image 102, the change in luminance is steep compared to the case of the increase pattern. For this reason, the switching of the image becomes more remarkable, and the driver can easily recognize the switching of the image. For example, even when the driver is not gazing at the display medium, the driver can feel the switching of images. On the other hand, in the case of the increase pattern, the change in luminance is slower in the display medium when switching from the first image 103 to the second image 104 than in the case of the decrease pattern. For this reason, the switching of the image is not significant as compared with the case of the decrease pattern, and the driver is less likely to feel the visual troublesomeness due to the switching of the image.

  Heretofore, specific examples of control switching (steps S004 and S005 in FIG. 2) by the first switching method and the second switching method have been described. In addition, you may combine the said specific examples 1-6 arbitrarily.

  As described above, in the present embodiment, when the importance of viewing speed limit information is high (in the case of a decrease pattern), the switching of images becomes more prominent, and the driver can easily recognize the switching of images. Become. Further, in the present embodiment, when the importance of visualizing the speed limit information is not high (in the case of an increase pattern), the switching of the image does not become remarkable, and the driver does not have the visual troublesomeness due to the switching of the image. It becomes difficult to feel. Therefore, in this embodiment, the visibility of the speed limit displayed on the display medium can be improved.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made. Hereinafter, modified examples will be described.

(Modification 1)
In the above embodiment, the shape of the image representing the speed limit (for example, the first image or the second image) is the road sign type, but the shape of the image is not limited to this. Another example of the image will be described with reference to FIG.

  10A and 10B show examples in which an image 402 and an image 403 are displayed in the vicinity of a circular speedometer 401, respectively. Each of the images 402 and 403 has a shape along the circumference of the speedometer 401. An image 402 illustrated in FIG. 10A indicates that the speed limit of the road link on which the vehicle is traveling is 60 km / h. An image 403 illustrated in FIG. 10B indicates that the speed limit of the road link on which the vehicle is traveling is 40 km / h.

  FIG. 10C and FIG. 10D show examples in which an image 405 and an image 406 are displayed in the vicinity of the speedometer 404 composed of a plurality of bars having different lengths. An image 405 and an image 406 are bars perpendicular to the bars of the speedometer 404, respectively. An image 405 illustrated in FIG. 10C indicates that the speed limit of the road link on which the vehicle is traveling is 60 km / h. An image 406 shown in FIG. 10D indicates that the speed limit of the road link on which the vehicle is traveling is 40 km / h.

(Modification 2)
In the above embodiment, the increase / decrease pattern determination results are two patterns, a decrease pattern and an increase pattern. Also good. For example, each of the decrease pattern and the increase pattern may be further subdivided into a decrease pattern (large), a decrease pattern (small), an increase pattern (large), and an increase pattern (small). The decrease pattern (large) is a pattern in which the speed limit reduction range is larger than the decrease pattern (small). The increase pattern (large) is a pattern in which the increase speed of the speed limit is larger than that of the increase pattern (small). This case will be described using specific example 1. For example, when FIG. 4A shows a decrease pattern (small), a value greater than time T3 is used for the decrease pattern (large). Thereby, when the reduction width of the speed limit is larger than the reduction pattern (small), the switching of the image becomes more remarkable, and the driver can easily recognize the switching of the image. For example, when FIG. 4B shows an increase pattern (large), a value smaller than the time T4 is used for the increase pattern (small). As a result, when the increase speed limit speed is smaller than the increase pattern (large), the image switching does not become remarkable, and the driver is less likely to feel the visual annoyance due to the image switching. This modification can also be applied to other specific examples.

(Modification 3)
In the above embodiment, the speed limit information is associated with each road link of the map information in advance and stored in a predetermined storage device, and the acquisition unit 10 acquires the speed limit information from the predetermined storage device. However, the present invention is not limited to this. For example, the speed limit information may be acquired by road-to-vehicle communication or may be acquired from image information such as a road sign. In the latter case, for example, the acquisition unit 10 acquires image information of a road sign (a road sign indicating a speed limit) captured by an in-vehicle camera. Then, the acquisition unit 10 or an image processing unit (not shown) performs image analysis on the image information and extracts speed limit information.

(Modification 4)
The switching method (first switching method) from the first image to the second image in the case of the decrease pattern is not limited to the method described in the specific examples 1 to 6. For example, the second image may be displayed in a larger size than the first image. Alternatively, for example, the second image may be displayed in a color different from the color of the first image. Alternatively, for example, the second image may be displayed in a shape different from that of the first image. Alternatively, for example, the second image may be displayed with a predetermined movement. This makes it easier for the driver to recognize image switching.

(Modification 5)
In the above embodiment, the control unit 201 controls the display unit 30 to generate the first image or the second image and display the first image or the second image on the display. However, the present invention is not limited to this. For example, the control unit 201 may control the display unit 30 to read a first image or a second image generated in advance from a predetermined storage device and display the first image or the second image on a display.

(Modification 6)
The configuration of the display system 1 is not limited to the configuration shown in FIG. Another configuration example of the display system 1 will be described with reference to FIG. FIG. 11 is a block diagram showing another configuration example of the display system 1 according to the present embodiment. Hereinafter, differences from the configuration example shown in FIG. 1 will be described.

  The display control device 20 includes an input unit 203 and a control unit 204.

  The input unit 203 receives speed limit information, which is information on the speed limit of the road on which the vehicle is traveling, from the acquisition unit 10. The control unit 204 has the same functions as the control unit 201 and the determination unit 202 illustrated in FIG. 1, and controls the display unit 30 that generates a predetermined image based on the speed limit information and outputs it to the display medium. .

  Specifically, the control unit 204 causes the display unit 30 to generate a first predetermined image representing a first presentation image (viewing image) indicating the first speed limit. And the control part 204 detects the change from the 1st speed limit of the speed limit of the road where a vehicle drive | works to the 2nd speed limit different from a 1st speed limit.

When the first speed limit is larger than the second speed limit, the control unit 204 uses the display unit 30 to generate a second presentation image (visual recognition) indicating the second speed limit from the generation of the first predetermined image. switching causing the first switching method to the generation of the second predetermined image representative of an image). The first switching method is, for example, the switching method described in FIGS. 4A, 5A, 6A, 7A, 8A, and 9A.

  On the other hand, when the first speed limit is smaller than the second speed limit, the control unit 204 uses the display unit 30 to change from the generation of the first predetermined image to the generation of the second predetermined image. Switching is performed by a second switching method different from the switching method. The second switching method is, for example, the switching method described in FIGS. 4B, 4C, 5B, 6B, 7B, 8B, and 9B.

  Next, an operation example of the display system 1 according to this modification will be described with reference to FIG. FIG. 12 is a flowchart illustrating an operation example of the display system 1 according to the present modification.

  First, the control unit 204 determines whether or not the input unit 203 has acquired speed limit information from the acquisition unit 10 (step S101).

  If the input unit 203 has not acquired the speed limit information (step S101: NO), the process is terminated as it is. In this case, after a predetermined time has elapsed, the operation shown in FIG. 12 is started again from step S101.

  When the input unit 203 acquires speed limit information (step S101: YES), the control unit 204 determines whether there is speed limit information acquired last time (step S102).

  When there is no speed limit information acquired last time (step S102: NO), the control unit 204 generates a first predetermined image (for example, the first images 101 and 103 in FIGS. 4 to 9) (step S106). . Thereafter, the flow returns to step S101.

  When there is speed limit information (first speed limit information) acquired last time (step S102: YES), the control unit 204 determines that the speed limit (first speed limit) acquired last time is the speed limit speed ( It is determined whether it is greater than (second speed limit) (step S103).

When the speed limit acquired last time is larger than the speed limit acquired this time (step S103: YES), the control unit 204 uses the display unit 30 to indicate the speed limit acquired this time from the generation of the first predetermined image. second predetermined image representing a second presentation image (e.g., the second image 102, 104 in FIGS. 4-9) switch causes the first switching method to generate a (step S104).

When the speed limit acquired last time is not greater than the speed limit acquired this time (step S103: NO), the control unit 204 uses the display unit 30 to generate the second predetermined image from the generation of the first predetermined image. Are switched by a second switching method different from the first switching method (step S105).

  Thereafter, the display unit 30 generates an image based on the control information from the control unit 204, and outputs the image to the display medium (step S106).

  In the above, the modification of Embodiment 1 of this invention was demonstrated. Note that the above-described modifications may be arbitrarily combined.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to the drawings.

  A configuration example of the display system 1 according to the present embodiment will be described with reference to FIG. FIG. 13 is a block diagram illustrating a configuration example of the display system 1 according to the present embodiment. Hereinafter, differences from the configuration example of the first embodiment (for example, see FIG. 1) will be described.

  The display system 1 further includes a detection unit 40 that detects vehicle position information.

  The acquisition unit 10 acquires information on the speed limit of the road section.

  When the detection unit 40 detects that the vehicle is present in the first section, the control unit 201 first limits the first section acquired by the acquisition unit 10 when displayed on the display medium. The display unit 30 is controlled to generate and display a first predetermined image representing an image indicating the speed on the display medium.

  When the detection unit 40 detects the movement of the vehicle from the first section to the second section, the determination unit 202 uses the first speed limit and the second section of the second section acquired by the acquisition unit 10. The magnitude relationship with the speed limit is determined. Note that the “movement of the vehicle” herein may be either movement of the vehicle in the past or movement of the vehicle in the future. That is, the movement of the vehicle may be detected either when detecting that the vehicle has moved through the section or when detecting that the vehicle is scheduled to move through the section.

  Then, when the determination unit 202 determines that the first speed limit is greater than the second speed limit, the control unit 201 causes the display unit to generate a first predetermined image and display it on the display medium. The first switching method executes switching to control in which a second predetermined image representing an image indicating the second speed limit when displayed on the display medium is generated on the display unit and displayed on the display medium. The switching timing here may be the moment when the vehicle moves from the first section to the second section, or before or after the elapse of a predetermined time.

  In addition, when the determination unit 202 determines that the first speed limit is lower than the second speed limit, the control unit 201 causes the display unit to generate a first predetermined image and display it on the display medium. The switching to the control for generating the second predetermined image on the display unit is executed by a second switching method different from the first switching method.

  As described above, the present embodiment can obtain the same effects as those of the first embodiment.

  In the present embodiment, the above-described modification of the first embodiment may be applied in any combination.

  The functions of the respective units of the display system 1 and the display control device 20 described above can be realized by a computer program.

  FIG. 14 is a diagram illustrating a hardware configuration of a computer that realizes the functions of the respective units by a program. The computer 1000 includes an input device 1001 such as an input button and a touch pad, an output device 1002 such as a display and a speaker, a CPU (Central Processing Unit) 1003, a ROM (Read Only Memory) 1004, a RAM (Random Access Memory) 1005, and a hard disk. A storage device 1006 such as a device or SSD (Solid State Drive), a reading device 1007 that reads information from a recording medium such as a DVD-ROM (Digital Versatile Disk Read Only Memory) or a USB (Universal Serial Bus) memory, and communication via a network A transmission / reception device 1008 is provided, and each unit is connected by a bus 1009.

  Then, the reading device 1007 reads the program from a recording medium on which a program for realizing the functions of the above-described units is recorded, and stores the program in the storage device 1006. Alternatively, the transmission / reception device 1008 communicates with a server device connected to the network, and causes the storage device 1006 to store a program for realizing the function of each unit downloaded from the server device.

  Then, the CPU 1003 copies the program stored in the storage device 1006 to the RAM 1005, and sequentially reads and executes the instructions included in the program from the RAM 1005, thereby realizing the functions of the above-described units. Further, when executing the program, the RAM 1005 or the storage device 1006 stores information obtained by the various processes described in the first embodiment and is used as appropriate.

The present invention relates to a display control device, a projection device, a display control program, and a recording medium that control display of information provided to a user (for example, an occupant of a vehicle or a user wearing a display device). Useful.

DESCRIPTION OF SYMBOLS 1 Display system 10 Acquisition part 20 Display control apparatus 30 Display part 40 Detection part 101,103 1st image 102,104 2nd image 401,404 Speedometer 402,403,405,406 Image 1000 Computer 1001 Input apparatus 1002 Output Device 1003 CPU
1004 ROM
1005 RAM
1006 Storage device 1007 Reading device 1008 Transmission / reception device 1009 Bus

Claims (19)

An input unit that receives speed limit information that is information on a speed limit of a road on which the vehicle is traveling;
A control unit that controls a display unit that generates and outputs a predetermined image based on the speed limit information to a display medium;
With
The predetermined image represents a presentation image indicating a speed limit when displayed on the display medium,
The controller is
A first predetermined image representing the first presentation image showing a first speed limit is generated before Symbol display unit,
The vehicle is a speed limit of the road running, detects the change to the first speed limit or we second speed limit,
When the detected change is a decreasing pattern , the display unit is used to stop the display of the first presentation image on the display medium , and after the first time has elapsed, the second speed limit to display the second presentation image showing, whereas, when the increase pattern, after the display of the previous SL first presentation image is stopped, after the lapse of the second time is less than zero or more and the first time causes display said second presentation image,
Display control device. An input unit that receives speed limit information that is information on a speed limit of a road on which the vehicle is traveling;
A control unit that controls a display unit that generates and outputs a predetermined image based on the speed limit information to a display medium;
With
The predetermined image represents a presentation image indicating a speed limit when displayed on the display medium,
The controller is
Causing the display unit to generate a first predetermined image representing a first presentation image indicating a first speed limit,
Detecting a change in the speed limit of the road on which the vehicle travels from the first speed limit to the second speed limit,
When the detected change is a decrease pattern, the display unit is used to change the display of the first presentation image on the display medium to the display of the second presentation image indicating the second speed limit. On the other hand, when the increase pattern, it is switched from the display of the first presentation image to the display of the second presentation image by a second switching method different from the first switching method,
The first switching method has a larger change in luminance when switching from the first presentation image to the second presentation image on the display medium than the second switching method.
Display control device. In the first switching method, after the display of the first presentation image on the display medium is stopped by stopping the generation of the first predetermined image having the first luminance, the first luminance and a method for displaying the second presentation image on the display medium by generating a second predetermined image in a second different luminance,
In the second switching method, after the display of the first presentation image on the display medium is stopped by stopping the generation of the first predetermined image having the first brightness, the second brightness is stopped. A method of causing the display medium to display the second presentation image by generating the second predetermined image having a third luminance different from
The display control device according to claim 2 , wherein a difference between the first luminance and the second luminance is larger than a difference between the first luminance and the third luminance.   The display control apparatus according to claim 3, wherein the first luminance and the third luminance are the same. In the first switching method, the display of the first presentation image on the display medium is stopped by stopping the generation of the first predetermined image having the first luminance, and then the third switching method is performed at the third time. A method of causing the display medium to display the second presentation image by generating a second predetermined image so that the luminance gradually increases to a second luminance greater than the first luminance;
In the fourth time, the second switching method stops the display of the first presentation image on the display medium by stopping the generation of the first predetermined image having the first luminance. A method of displaying the second presentation image on the display medium by generating the second predetermined image so that the luminance gradually increases to the second luminance;
The display control apparatus according to claim 2 , wherein the fourth time is longer than the third time. In the first switching method, the display of the first presentation image on the display medium is stopped by stopping the generation of the first predetermined image having the first luminance. A method of causing the display medium to display the second presentation image by generating a second predetermined image so that the luminance gradually increases to the first luminance;
In the sixth time, the second switching method stops the display of the first presentation image on the display medium by stopping the generation of the first predetermined image having the first luminance. A method for displaying the second presentation image on the display medium by generating the second predetermined image so that the luminance gradually increases to the first luminance;
The display control device according to claim 2 , wherein the fifth time is a predetermined time exceeding 20 msec, and the sixth time is longer than the fifth time. In the first switching method, when the display of the first presentation image on the display medium is stopped by stopping the generation of the first predetermined image having the first luminance, the first predetermined image is displayed. After the luminance is gradually decreased to a predetermined luminance less than the first luminance in a seventh time, the second predetermined image having the first luminance is generated to generate the second presentation image on the display medium. Is a way to display
In the second switching method, when the display of the first presentation image on the display medium is stopped by stopping the generation of the first predetermined image having the first luminance, the first predetermined image is displayed. After the luminance is gradually decreased to a predetermined luminance less than the first luminance at an eighth time, the second predetermined image having the first luminance is generated to generate the second presentation on the display medium. It is a method of displaying an image,
The display control device according to claim 2 , wherein the seventh time is a predetermined time exceeding 20 msec, and the eighth time is longer than the seventh time. An input unit for receiving speed limit information, which is information on a speed limit of a road section, and vehicle position information;
A control unit that controls a display unit that generates and outputs a predetermined image based on the speed limit information to a display medium;
With
The predetermined image represents a presentation image indicating a speed limit when displayed on the display medium,
The controller is
When it is detected that the vehicle is present in the first section based on the position information of the vehicle, a first predetermined image representing a first presentation image indicating a first speed limit in the first section is displayed. , Generated on the display unit,
Detecting that the vehicle has moved from the first section to the second section based on the position information of the vehicle;
When the first speed limit is greater than the second speed limit of the second section, the display unit is used to stop the display of the first presentation image on the display medium, after a time, the second to display the second presentation image indicating the speed limit, whereas, prior SL when the first speed limit is lower than the second speed limit, the first presentation image After the second display image is displayed, after the second time that is zero or more and less than the first time ,
Display control device. An input unit for receiving speed limit information, which is information on a speed limit of a road section, and vehicle position information;
A control unit that controls a display unit that generates and outputs a predetermined image based on the speed limit information to a display medium;
With
The predetermined image represents a presentation image indicating a speed limit when displayed on the display medium,
The controller is
When it is detected that the vehicle is present in the first section based on the position information of the vehicle, a first predetermined image representing a first presentation image indicating a first speed limit in the first section is displayed. , Generated on the display unit,
Detecting that the vehicle has moved from the first section to the second section based on the position information of the vehicle;
When the first speed limit is greater than the second speed limit of the second section, the display unit is used to change the second speed limit from the display of the first presentation image on the display medium. When the first speed limit is lower than the second speed limit, the second display image is displayed from the first display image to the second speed. Switching to the display of the presented image by a second switching method different from the first switching method,
The first switching method has a larger change in luminance when switching from the first presentation image to the second presentation image on the display medium than the second switching method.
Display control device. The display control according to claim 9 , wherein the switching by the first switching method and the switching by the second switching method are performed when the vehicle moves from the first section to the second section. apparatus. Switching by the first switching process, and switching by the second switching method, the vehicle is performed after a predetermined time has elapsed from moving from the first section to the second section, claim 9 The display control apparatus according to 1. An input unit that receives speed limit information that is information on a speed limit of a road on which the vehicle is traveling;
A display unit that generates a predetermined image based on the speed limit information and outputs it to a display medium;
A control unit for controlling the display unit;
With
The predetermined image represents a presentation image indicating a speed limit when displayed on the display medium,
The controller is
A first predetermined image representing the first presentation image showing a first speed limit is generated before Symbol display unit,
The vehicle is a speed limit of the road running, detects the change to the first speed limit or we second speed limit,
When the detected change is a decreasing pattern, the display unit is used to stop the display of the first presentation image on the display medium , and after the first time has elapsed, the second speed limit When the second presentation image is displayed, on the other hand, when the increase pattern is reached, after the display of the first presentation image is stopped, after a second time that is greater than or equal to zero and less than the first time, Displaying the second presentation image;
Projection device. An input unit that receives speed limit information that is information on a speed limit of a road on which the vehicle is traveling;
A display unit that generates a predetermined image based on the speed limit information and outputs it to a display medium;
A control unit for controlling the display unit;
With
The predetermined image represents a presentation image indicating a speed limit when displayed on the display medium,
The controller is
Causing the display unit to generate a first predetermined image representing a first presentation image indicating a first speed limit,
Detecting a change in the speed limit of the road on which the vehicle travels from the first speed limit to the second speed limit,
When the detected change is a decrease pattern, the display unit is used to change the display of the first presentation image on the display medium to the display of the second presentation image indicating the second speed limit. On the other hand, when the increase pattern, it is switched from the display of the first presentation image to the display of the second presentation image by a second switching method different from the first switching method,
The first switching method has a larger change in luminance when switching from the first presentation image to the second presentation image on the display medium than the second switching method.
Projection device. An acquisition unit that acquires speed limit information that is information on a speed limit of a road on which the vehicle travels, and a presentation image that indicates the speed limit when displayed on a display medium, and generates a predetermined image based on the speed limit information a display control program Oite performed to the display control equipment in the display system comprising a display unit for outputting to the display medium and,
For the computer of the display control device,
A process of causing the display unit to generate a first predetermined image representing a first presentation image indicating a first speed limit;
A process of detecting a change in a speed limit of a road on which the vehicle travels from the first speed limit to a second speed limit different from the first speed limit;
When the detected change is a decreasing pattern , the display unit is used to stop the display of the first presentation image on the display medium , and after the first time has elapsed, the second speed limit to display the second presentation image showing, whereas, when the increase pattern, after the display of the previous SL first presentation image is stopped, after the lapse of the second time is less than zero or more and the first time , a process of displaying the second presentation image,
Display control program that executes An acquisition unit that acquires speed limit information that is information on a speed limit of a road on which the vehicle travels, and a presentation image that indicates the speed limit when displayed on a display medium, and generates a predetermined image based on the speed limit information A display control program executed in a display control device in a display system including a display unit that outputs to the display medium,
For the computer of the display control device,
A process of causing the display unit to generate a first predetermined image representing a first presentation image indicating a first speed limit;
A process of detecting a change in a speed limit of a road on which the vehicle travels from the first speed limit to a second speed limit different from the first speed limit;
When the detected change is a decrease pattern, the display unit is used to change the display of the first presentation image on the display medium to the display of the second presentation image indicating the second speed limit. Switching by the switching method, and on the other hand, when the increase pattern, the process of switching from the display of the first presentation image to the display of the second presentation image by a second switching method different from the first switching method;
And execute
The first switching method has a larger change in luminance when switching from the first presentation image to the second presentation image on the display medium than the second switching method.
Display control program. An acquisition unit that acquires speed limit information that is information on a speed limit of a road on which the vehicle travels, and a presentation image that indicates the speed limit when displayed on a display medium, and generates a predetermined image based on the speed limit information a non-transitory recording medium a computer readable recording a display control program to be Oite performed to the display control equipment in the display system comprising a display unit for outputting to the display medium and,
For the computer of the display control device,
A process of causing the display unit to generate a first predetermined image representing a first presentation image indicating a first speed limit;
A process of detecting a change in a speed limit of a road on which the vehicle travels from the first speed limit to a second speed limit different from the first speed limit;
When the detected change is a decreasing pattern , the display unit is used to stop the display of the first presentation image on the display medium , and after the first time has elapsed, the second speed limit to display the second presentation image showing, whereas, when the increase pattern, after the display of the previous SL first presentation image is stopped, after the lapse of the second time is less than zero or more and the first time , a process of displaying the second presentation image,
A recording medium recording a display control program for executing An acquisition unit that acquires speed limit information that is information on a speed limit of a road on which the vehicle travels, and a presentation image that indicates the speed limit when displayed on a display medium, and generates a predetermined image based on the speed limit information A computer-readable non-transitory recording medium recording a display control program executed in a display control device in a display system including a display unit that outputs to the display medium,
For the computer of the display control device,
A process of causing the display unit to generate a first predetermined image representing a first presentation image indicating a first speed limit;
A process of detecting a change in a speed limit of a road on which the vehicle travels from the first speed limit to a second speed limit different from the first speed limit;
When the detected change is a decrease pattern, the display unit is used to change the display of the first presentation image on the display medium to the display of the second presentation image indicating the second speed limit. Switching by the switching method, and on the other hand, when the increase pattern, the process of switching from the display of the first presentation image to the display of the second presentation image by a second switching method different from the first switching method;
And execute
The first switching method has a larger change in luminance when switching from the first presentation image to the second presentation image on the display medium than the second switching method.
A recording medium on which a display control program is recorded. An input unit that receives speed limit information that is information on a speed limit of a road on which the vehicle is traveling;
A control unit that controls a display unit that generates and outputs a predetermined image based on the speed limit information to a display medium;
The predetermined image represents a presentation image indicating a speed limit when displayed on the display medium,
With
The controller is
Causing the display unit to generate a first predetermined image representing a first presentation image indicating a first speed limit,
Detecting a change in the speed limit of the road on which the vehicle travels from the first speed limit to the second speed limit,
When the detected change is a decrease pattern, the display unit is used to change the display of the first presentation image on the display medium to the display of the second presentation image indicating the second speed limit. On the other hand, when the increase pattern, it is switched from the display of the first presentation image to the display of the second presentation image by a second switching method different from the first switching method,
In the first switching method, switching from the first presentation image to the second presentation image is more significant than in the second switching method.
Display control device. An input unit for receiving speed limit information, which is information on a speed limit of a road section, and vehicle position information;
A control unit that controls a display unit that generates and outputs a predetermined image based on the speed limit information to a display medium;
With
The predetermined image represents a presentation image indicating a speed limit when displayed on the display medium,
The controller is
When it is detected that the vehicle is present in the first section based on the position information of the vehicle, a first predetermined image representing a first presentation image indicating a first speed limit in the first section is displayed. , Generated on the display unit,
Detecting that the vehicle has moved from the first section to the second section based on the position information of the vehicle;
When the first speed limit is greater than the second speed limit of the second section, the display unit is used to change the second speed limit from the display of the first presentation image on the display medium. When the first speed limit is lower than the second speed limit, the second display image is displayed from the first display image to the second speed. Switching to the display of the presented image by a second switching method different from the first switching method,
In the first switching method, switching from the first presentation image to the second presentation image is more significant than in the second switching method.
Display control device.

Images